mirror of https://gitee.com/openkylin/linux.git
588 lines
13 KiB
C
588 lines
13 KiB
C
/*
|
|
* Tegra host1x Job
|
|
*
|
|
* Copyright (c) 2010-2013, NVIDIA Corporation.
|
|
*
|
|
* This program is free software; you can redistribute it and/or modify it
|
|
* under the terms and conditions of the GNU General Public License,
|
|
* version 2, as published by the Free Software Foundation.
|
|
*
|
|
* This program is distributed in the hope it will be useful, but WITHOUT
|
|
* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
|
|
* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for
|
|
* more details.
|
|
*
|
|
* You should have received a copy of the GNU General Public License
|
|
* along with this program. If not, see <http://www.gnu.org/licenses/>.
|
|
*/
|
|
|
|
#include <linux/dma-mapping.h>
|
|
#include <linux/err.h>
|
|
#include <linux/kref.h>
|
|
#include <linux/module.h>
|
|
#include <linux/scatterlist.h>
|
|
#include <linux/slab.h>
|
|
#include <linux/vmalloc.h>
|
|
#include <trace/events/host1x.h>
|
|
|
|
#include "channel.h"
|
|
#include "dev.h"
|
|
#include "host1x_bo.h"
|
|
#include "job.h"
|
|
#include "syncpt.h"
|
|
|
|
struct host1x_job *host1x_job_alloc(struct host1x_channel *ch,
|
|
u32 num_cmdbufs, u32 num_relocs,
|
|
u32 num_waitchks)
|
|
{
|
|
struct host1x_job *job = NULL;
|
|
unsigned int num_unpins = num_cmdbufs + num_relocs;
|
|
u64 total;
|
|
void *mem;
|
|
|
|
/* Check that we're not going to overflow */
|
|
total = sizeof(struct host1x_job) +
|
|
(u64)num_relocs * sizeof(struct host1x_reloc) +
|
|
(u64)num_unpins * sizeof(struct host1x_job_unpin_data) +
|
|
(u64)num_waitchks * sizeof(struct host1x_waitchk) +
|
|
(u64)num_cmdbufs * sizeof(struct host1x_job_gather) +
|
|
(u64)num_unpins * sizeof(dma_addr_t) +
|
|
(u64)num_unpins * sizeof(u32 *);
|
|
if (total > ULONG_MAX)
|
|
return NULL;
|
|
|
|
mem = job = kzalloc(total, GFP_KERNEL);
|
|
if (!job)
|
|
return NULL;
|
|
|
|
kref_init(&job->ref);
|
|
job->channel = ch;
|
|
|
|
/* Redistribute memory to the structs */
|
|
mem += sizeof(struct host1x_job);
|
|
job->relocarray = num_relocs ? mem : NULL;
|
|
mem += num_relocs * sizeof(struct host1x_reloc);
|
|
job->unpins = num_unpins ? mem : NULL;
|
|
mem += num_unpins * sizeof(struct host1x_job_unpin_data);
|
|
job->waitchk = num_waitchks ? mem : NULL;
|
|
mem += num_waitchks * sizeof(struct host1x_waitchk);
|
|
job->gathers = num_cmdbufs ? mem : NULL;
|
|
mem += num_cmdbufs * sizeof(struct host1x_job_gather);
|
|
job->addr_phys = num_unpins ? mem : NULL;
|
|
|
|
job->reloc_addr_phys = job->addr_phys;
|
|
job->gather_addr_phys = &job->addr_phys[num_relocs];
|
|
|
|
return job;
|
|
}
|
|
|
|
struct host1x_job *host1x_job_get(struct host1x_job *job)
|
|
{
|
|
kref_get(&job->ref);
|
|
return job;
|
|
}
|
|
|
|
static void job_free(struct kref *ref)
|
|
{
|
|
struct host1x_job *job = container_of(ref, struct host1x_job, ref);
|
|
|
|
kfree(job);
|
|
}
|
|
|
|
void host1x_job_put(struct host1x_job *job)
|
|
{
|
|
kref_put(&job->ref, job_free);
|
|
}
|
|
|
|
void host1x_job_add_gather(struct host1x_job *job, struct host1x_bo *bo,
|
|
u32 words, u32 offset)
|
|
{
|
|
struct host1x_job_gather *cur_gather = &job->gathers[job->num_gathers];
|
|
|
|
cur_gather->words = words;
|
|
cur_gather->bo = bo;
|
|
cur_gather->offset = offset;
|
|
job->num_gathers++;
|
|
}
|
|
|
|
/*
|
|
* NULL an already satisfied WAIT_SYNCPT host method, by patching its
|
|
* args in the command stream. The method data is changed to reference
|
|
* a reserved (never given out or incr) HOST1X_SYNCPT_RESERVED syncpt
|
|
* with a matching threshold value of 0, so is guaranteed to be popped
|
|
* by the host HW.
|
|
*/
|
|
static void host1x_syncpt_patch_offset(struct host1x_syncpt *sp,
|
|
struct host1x_bo *h, u32 offset)
|
|
{
|
|
void *patch_addr = NULL;
|
|
|
|
/* patch the wait */
|
|
patch_addr = host1x_bo_kmap(h, offset >> PAGE_SHIFT);
|
|
if (patch_addr) {
|
|
host1x_syncpt_patch_wait(sp,
|
|
patch_addr + (offset & ~PAGE_MASK));
|
|
host1x_bo_kunmap(h, offset >> PAGE_SHIFT, patch_addr);
|
|
} else
|
|
pr_err("Could not map cmdbuf for wait check\n");
|
|
}
|
|
|
|
/*
|
|
* Check driver supplied waitchk structs for syncpt thresholds
|
|
* that have already been satisfied and NULL the comparison (to
|
|
* avoid a wrap condition in the HW).
|
|
*/
|
|
static int do_waitchks(struct host1x_job *job, struct host1x *host,
|
|
struct host1x_bo *patch)
|
|
{
|
|
int i;
|
|
|
|
/* compare syncpt vs wait threshold */
|
|
for (i = 0; i < job->num_waitchk; i++) {
|
|
struct host1x_waitchk *wait = &job->waitchk[i];
|
|
struct host1x_syncpt *sp =
|
|
host1x_syncpt_get(host, wait->syncpt_id);
|
|
|
|
/* validate syncpt id */
|
|
if (wait->syncpt_id > host1x_syncpt_nb_pts(host))
|
|
continue;
|
|
|
|
/* skip all other gathers */
|
|
if (patch != wait->bo)
|
|
continue;
|
|
|
|
trace_host1x_syncpt_wait_check(wait->bo, wait->offset,
|
|
wait->syncpt_id, wait->thresh,
|
|
host1x_syncpt_read_min(sp));
|
|
|
|
if (host1x_syncpt_is_expired(sp, wait->thresh)) {
|
|
dev_dbg(host->dev,
|
|
"drop WAIT id %d (%s) thresh 0x%x, min 0x%x\n",
|
|
wait->syncpt_id, sp->name, wait->thresh,
|
|
host1x_syncpt_read_min(sp));
|
|
|
|
host1x_syncpt_patch_offset(sp, patch, wait->offset);
|
|
}
|
|
|
|
wait->bo = NULL;
|
|
}
|
|
|
|
return 0;
|
|
}
|
|
|
|
static unsigned int pin_job(struct host1x_job *job)
|
|
{
|
|
unsigned int i;
|
|
|
|
job->num_unpins = 0;
|
|
|
|
for (i = 0; i < job->num_relocs; i++) {
|
|
struct host1x_reloc *reloc = &job->relocarray[i];
|
|
struct sg_table *sgt;
|
|
dma_addr_t phys_addr;
|
|
|
|
reloc->target = host1x_bo_get(reloc->target);
|
|
if (!reloc->target)
|
|
goto unpin;
|
|
|
|
phys_addr = host1x_bo_pin(reloc->target, &sgt);
|
|
if (!phys_addr)
|
|
goto unpin;
|
|
|
|
job->addr_phys[job->num_unpins] = phys_addr;
|
|
job->unpins[job->num_unpins].bo = reloc->target;
|
|
job->unpins[job->num_unpins].sgt = sgt;
|
|
job->num_unpins++;
|
|
}
|
|
|
|
for (i = 0; i < job->num_gathers; i++) {
|
|
struct host1x_job_gather *g = &job->gathers[i];
|
|
struct sg_table *sgt;
|
|
dma_addr_t phys_addr;
|
|
|
|
g->bo = host1x_bo_get(g->bo);
|
|
if (!g->bo)
|
|
goto unpin;
|
|
|
|
phys_addr = host1x_bo_pin(g->bo, &sgt);
|
|
if (!phys_addr)
|
|
goto unpin;
|
|
|
|
job->addr_phys[job->num_unpins] = phys_addr;
|
|
job->unpins[job->num_unpins].bo = g->bo;
|
|
job->unpins[job->num_unpins].sgt = sgt;
|
|
job->num_unpins++;
|
|
}
|
|
|
|
return job->num_unpins;
|
|
|
|
unpin:
|
|
host1x_job_unpin(job);
|
|
return 0;
|
|
}
|
|
|
|
static unsigned int do_relocs(struct host1x_job *job, struct host1x_bo *cmdbuf)
|
|
{
|
|
int i = 0;
|
|
u32 last_page = ~0;
|
|
void *cmdbuf_page_addr = NULL;
|
|
|
|
/* pin & patch the relocs for one gather */
|
|
for (i = 0; i < job->num_relocs; i++) {
|
|
struct host1x_reloc *reloc = &job->relocarray[i];
|
|
u32 reloc_addr = (job->reloc_addr_phys[i] +
|
|
reloc->target_offset) >> reloc->shift;
|
|
u32 *target;
|
|
|
|
/* skip all other gathers */
|
|
if (cmdbuf != reloc->cmdbuf)
|
|
continue;
|
|
|
|
if (last_page != reloc->cmdbuf_offset >> PAGE_SHIFT) {
|
|
if (cmdbuf_page_addr)
|
|
host1x_bo_kunmap(cmdbuf, last_page,
|
|
cmdbuf_page_addr);
|
|
|
|
cmdbuf_page_addr = host1x_bo_kmap(cmdbuf,
|
|
reloc->cmdbuf_offset >> PAGE_SHIFT);
|
|
last_page = reloc->cmdbuf_offset >> PAGE_SHIFT;
|
|
|
|
if (unlikely(!cmdbuf_page_addr)) {
|
|
pr_err("Could not map cmdbuf for relocation\n");
|
|
return -ENOMEM;
|
|
}
|
|
}
|
|
|
|
target = cmdbuf_page_addr + (reloc->cmdbuf_offset & ~PAGE_MASK);
|
|
*target = reloc_addr;
|
|
}
|
|
|
|
if (cmdbuf_page_addr)
|
|
host1x_bo_kunmap(cmdbuf, last_page, cmdbuf_page_addr);
|
|
|
|
return 0;
|
|
}
|
|
|
|
static bool check_reloc(struct host1x_reloc *reloc, struct host1x_bo *cmdbuf,
|
|
unsigned int offset)
|
|
{
|
|
offset *= sizeof(u32);
|
|
|
|
if (reloc->cmdbuf != cmdbuf || reloc->cmdbuf_offset != offset)
|
|
return false;
|
|
|
|
return true;
|
|
}
|
|
|
|
struct host1x_firewall {
|
|
struct host1x_job *job;
|
|
struct device *dev;
|
|
|
|
unsigned int num_relocs;
|
|
struct host1x_reloc *reloc;
|
|
|
|
struct host1x_bo *cmdbuf_id;
|
|
unsigned int offset;
|
|
|
|
u32 words;
|
|
u32 class;
|
|
u32 reg;
|
|
u32 mask;
|
|
u32 count;
|
|
};
|
|
|
|
static int check_mask(struct host1x_firewall *fw)
|
|
{
|
|
u32 mask = fw->mask;
|
|
u32 reg = fw->reg;
|
|
|
|
while (mask) {
|
|
if (fw->words == 0)
|
|
return -EINVAL;
|
|
|
|
if (mask & 1) {
|
|
if (fw->job->is_addr_reg(fw->dev, fw->class, reg)) {
|
|
if (!fw->num_relocs)
|
|
return -EINVAL;
|
|
if (!check_reloc(fw->reloc, fw->cmdbuf_id,
|
|
fw->offset))
|
|
return -EINVAL;
|
|
fw->reloc++;
|
|
fw->num_relocs--;
|
|
}
|
|
fw->words--;
|
|
fw->offset++;
|
|
}
|
|
mask >>= 1;
|
|
reg++;
|
|
}
|
|
|
|
return 0;
|
|
}
|
|
|
|
static int check_incr(struct host1x_firewall *fw)
|
|
{
|
|
u32 count = fw->count;
|
|
u32 reg = fw->reg;
|
|
|
|
while (count) {
|
|
if (fw->words == 0)
|
|
return -EINVAL;
|
|
|
|
if (fw->job->is_addr_reg(fw->dev, fw->class, reg)) {
|
|
if (!fw->num_relocs)
|
|
return -EINVAL;
|
|
if (!check_reloc(fw->reloc, fw->cmdbuf_id, fw->offset))
|
|
return -EINVAL;
|
|
fw->reloc++;
|
|
fw->num_relocs--;
|
|
}
|
|
reg++;
|
|
fw->words--;
|
|
fw->offset++;
|
|
count--;
|
|
}
|
|
|
|
return 0;
|
|
}
|
|
|
|
static int check_nonincr(struct host1x_firewall *fw)
|
|
{
|
|
int is_addr_reg = fw->job->is_addr_reg(fw->dev, fw->class, fw->reg);
|
|
u32 count = fw->count;
|
|
|
|
while (count) {
|
|
if (fw->words == 0)
|
|
return -EINVAL;
|
|
|
|
if (is_addr_reg) {
|
|
if (!fw->num_relocs)
|
|
return -EINVAL;
|
|
if (!check_reloc(fw->reloc, fw->cmdbuf_id, fw->offset))
|
|
return -EINVAL;
|
|
fw->reloc++;
|
|
fw->num_relocs--;
|
|
}
|
|
fw->words--;
|
|
fw->offset++;
|
|
count--;
|
|
}
|
|
|
|
return 0;
|
|
}
|
|
|
|
static int validate(struct host1x_firewall *fw, struct host1x_job_gather *g)
|
|
{
|
|
u32 *cmdbuf_base = (u32 *)fw->job->gather_copy_mapped +
|
|
(g->offset / sizeof(u32));
|
|
int err = 0;
|
|
|
|
if (!fw->job->is_addr_reg)
|
|
return 0;
|
|
|
|
fw->words = g->words;
|
|
fw->cmdbuf_id = g->bo;
|
|
fw->offset = 0;
|
|
|
|
while (fw->words && !err) {
|
|
u32 word = cmdbuf_base[fw->offset];
|
|
u32 opcode = (word & 0xf0000000) >> 28;
|
|
|
|
fw->mask = 0;
|
|
fw->reg = 0;
|
|
fw->count = 0;
|
|
fw->words--;
|
|
fw->offset++;
|
|
|
|
switch (opcode) {
|
|
case 0:
|
|
fw->class = word >> 6 & 0x3ff;
|
|
fw->mask = word & 0x3f;
|
|
fw->reg = word >> 16 & 0xfff;
|
|
err = check_mask(fw);
|
|
if (err)
|
|
goto out;
|
|
break;
|
|
case 1:
|
|
fw->reg = word >> 16 & 0xfff;
|
|
fw->count = word & 0xffff;
|
|
err = check_incr(fw);
|
|
if (err)
|
|
goto out;
|
|
break;
|
|
|
|
case 2:
|
|
fw->reg = word >> 16 & 0xfff;
|
|
fw->count = word & 0xffff;
|
|
err = check_nonincr(fw);
|
|
if (err)
|
|
goto out;
|
|
break;
|
|
|
|
case 3:
|
|
fw->mask = word & 0xffff;
|
|
fw->reg = word >> 16 & 0xfff;
|
|
err = check_mask(fw);
|
|
if (err)
|
|
goto out;
|
|
break;
|
|
case 4:
|
|
case 5:
|
|
case 14:
|
|
break;
|
|
default:
|
|
err = -EINVAL;
|
|
break;
|
|
}
|
|
}
|
|
|
|
/* No relocs should remain at this point */
|
|
if (fw->num_relocs)
|
|
err = -EINVAL;
|
|
|
|
out:
|
|
return err;
|
|
}
|
|
|
|
static inline int copy_gathers(struct host1x_job *job, struct device *dev)
|
|
{
|
|
struct host1x_firewall fw;
|
|
size_t size = 0;
|
|
size_t offset = 0;
|
|
int i;
|
|
|
|
fw.job = job;
|
|
fw.dev = dev;
|
|
fw.reloc = job->relocarray;
|
|
fw.num_relocs = job->num_relocs;
|
|
fw.class = 0;
|
|
|
|
for (i = 0; i < job->num_gathers; i++) {
|
|
struct host1x_job_gather *g = &job->gathers[i];
|
|
size += g->words * sizeof(u32);
|
|
}
|
|
|
|
job->gather_copy_mapped = dma_alloc_writecombine(dev, size,
|
|
&job->gather_copy,
|
|
GFP_KERNEL);
|
|
if (!job->gather_copy_mapped) {
|
|
job->gather_copy_mapped = NULL;
|
|
return -ENOMEM;
|
|
}
|
|
|
|
job->gather_copy_size = size;
|
|
|
|
for (i = 0; i < job->num_gathers; i++) {
|
|
struct host1x_job_gather *g = &job->gathers[i];
|
|
void *gather;
|
|
|
|
/* Copy the gather */
|
|
gather = host1x_bo_mmap(g->bo);
|
|
memcpy(job->gather_copy_mapped + offset, gather + g->offset,
|
|
g->words * sizeof(u32));
|
|
host1x_bo_munmap(g->bo, gather);
|
|
|
|
/* Store the location in the buffer */
|
|
g->base = job->gather_copy;
|
|
g->offset = offset;
|
|
|
|
/* Validate the job */
|
|
if (validate(&fw, g))
|
|
return -EINVAL;
|
|
|
|
offset += g->words * sizeof(u32);
|
|
}
|
|
|
|
return 0;
|
|
}
|
|
|
|
int host1x_job_pin(struct host1x_job *job, struct device *dev)
|
|
{
|
|
int err;
|
|
unsigned int i, j;
|
|
struct host1x *host = dev_get_drvdata(dev->parent);
|
|
DECLARE_BITMAP(waitchk_mask, host1x_syncpt_nb_pts(host));
|
|
|
|
bitmap_zero(waitchk_mask, host1x_syncpt_nb_pts(host));
|
|
for (i = 0; i < job->num_waitchk; i++) {
|
|
u32 syncpt_id = job->waitchk[i].syncpt_id;
|
|
if (syncpt_id < host1x_syncpt_nb_pts(host))
|
|
set_bit(syncpt_id, waitchk_mask);
|
|
}
|
|
|
|
/* get current syncpt values for waitchk */
|
|
for_each_set_bit(i, waitchk_mask, host1x_syncpt_nb_pts(host))
|
|
host1x_syncpt_load(host->syncpt + i);
|
|
|
|
/* pin memory */
|
|
err = pin_job(job);
|
|
if (!err)
|
|
goto out;
|
|
|
|
/* patch gathers */
|
|
for (i = 0; i < job->num_gathers; i++) {
|
|
struct host1x_job_gather *g = &job->gathers[i];
|
|
|
|
/* process each gather mem only once */
|
|
if (g->handled)
|
|
continue;
|
|
|
|
g->base = job->gather_addr_phys[i];
|
|
|
|
for (j = 0; j < job->num_gathers; j++)
|
|
if (job->gathers[j].bo == g->bo)
|
|
job->gathers[j].handled = true;
|
|
|
|
err = do_relocs(job, g->bo);
|
|
if (err)
|
|
break;
|
|
|
|
err = do_waitchks(job, host, g->bo);
|
|
if (err)
|
|
break;
|
|
}
|
|
|
|
if (IS_ENABLED(CONFIG_TEGRA_HOST1X_FIREWALL) && !err) {
|
|
err = copy_gathers(job, dev);
|
|
if (err) {
|
|
host1x_job_unpin(job);
|
|
return err;
|
|
}
|
|
}
|
|
|
|
out:
|
|
wmb();
|
|
|
|
return err;
|
|
}
|
|
|
|
void host1x_job_unpin(struct host1x_job *job)
|
|
{
|
|
unsigned int i;
|
|
|
|
for (i = 0; i < job->num_unpins; i++) {
|
|
struct host1x_job_unpin_data *unpin = &job->unpins[i];
|
|
host1x_bo_unpin(unpin->bo, unpin->sgt);
|
|
host1x_bo_put(unpin->bo);
|
|
}
|
|
job->num_unpins = 0;
|
|
|
|
if (job->gather_copy_size)
|
|
dma_free_writecombine(job->channel->dev, job->gather_copy_size,
|
|
job->gather_copy_mapped,
|
|
job->gather_copy);
|
|
}
|
|
|
|
/*
|
|
* Debug routine used to dump job entries
|
|
*/
|
|
void host1x_job_dump(struct device *dev, struct host1x_job *job)
|
|
{
|
|
dev_dbg(dev, " SYNCPT_ID %d\n", job->syncpt_id);
|
|
dev_dbg(dev, " SYNCPT_VAL %d\n", job->syncpt_end);
|
|
dev_dbg(dev, " FIRST_GET 0x%x\n", job->first_get);
|
|
dev_dbg(dev, " TIMEOUT %d\n", job->timeout);
|
|
dev_dbg(dev, " NUM_SLOTS %d\n", job->num_slots);
|
|
dev_dbg(dev, " NUM_HANDLES %d\n", job->num_unpins);
|
|
}
|